Numbers X such that there exists Y in N with X^2=21*Y^2+7.

A145693

Numbers X such that there exists Y in N with X^2=21*Y^2+7.

Terms

    a(0) =14a(1) =1526a(2) =167846a(3) =18461534a(4) =2030600894a(5) =223347636806

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